Participants
How many participants were there in the study?
There were 61 female monkeys and 21 male monkeys used in the study.
How many trials were there in the experiment?
There were seven 25 minute trials.
Lab experiments are standardized so they can be replicated. Is this a strength, weakness, or control of the study?
This is a strength of the study.
Which monkeys preferred wheeled toys?
The male monkeys significantly preferred wheeled toys.
What type of monkeys were used in the study?
Subjects were rhesus monkeys.
What was the data collection method used in the study?
The observers created a chart categorizing monkey behaviors and interactions with toys.
Lab experiments are not like the real world.Lab experiments are not like the real world. Is this a strength, weakness, or control of the study?
This is a weakness of the study.
Which monkeys showed no preference?
Female monkeys showed no significant preference for any type of toy.
What was the sampling method for the study?
Subjects were from the Yerkes National Primate Research Center Field Station, where they had lived in a group together for more than 25 years.
What were the masculine toys used in the experiment?
A wagon, a truck, a car, a construction vehicle, a shopping cart, and a dump truck.
Lab experiments have high levels of control. Is this a strength, weakness, or control of the study?
This is a strength of the study.
How did rank of female monkeys correlate with their toy preferences?
Rank significantly positively correlated with frequency of interaction for both toy types. Females with no preference ranked lower than females with a plush preference.
Which monkeys were excluded from the study?
The interactions of 39 newborn (0-3 months) infants were not coded.
What were the feminine toys used in the experiment?
Winnie-the-Pooh, Raggedy Ann, a koala bear, a hand puppet, an armadillo, a teddy bear, Scooby-Doo, and a turtle.
There was not a wide variety of participants. Is this a strength, weakness, or control of the study?
This is a weakness of the study.
How much did male monkeys prefer wheeled toys?
Male monkeys had a 73% preference for wheeled toys.
Why weren´t infant monkeys used in the experiment?
Infant monkeys were not coded in the experiment due to difficulty in consistent individual identification.
What is one of the controls of the study?
The placement of masculine and feminine toys were counterbalanced across trials.
The monkeys were pre-ranked. Is this a strength, weakness, or control of the study?
This is a control of the study.
What were the good ethics of the study?
The monkeys had a varied diet and lived in social groups as they typically would in the wild.